Liquid dispensing apparatus



July 28, 1931.

w. H. PARKER ETAL, LI UID DISPENSING APPARATUS Filed Feb. 1 1926 Jim f1 Par/61: Z/derZc/r Patented July 1931 pmrso STATES 'I'IZATENT OFFICE WALTER H. PARKER AND FREDERICK W.

MORE, MARYLAND, A CORPORATION OF Drummer, or nocnnsrna, rmmsrnvamn, ASSIGNOBS, BY mnsnn ASSIGNMENTS, 'ro rm: WAYNE rum" comgamr, or BALTI- MARYLAND LIQUID DISPENSING APPARATUS Application riled February This invention relates toliquid dispensing apparatus.

One object of the'invention is to provilie simple, reliable and efiicient liquid dispen 6 ingapparatus which will permit a continuous flow of liquid to be measured and dispensed, thereby reducing to a minimum the time required for supplying a motor vehlcle. Another object is to provide apparatus of the above mentioned type in which liquid is accurately measured and dispensed.

.Another object is to provide apparatus of the type indicated in which the'va'rious parts of the apparatus are timed and controlled to secure accurate measurement of liquid and facilitate the dispensing thereof.

Another object is to alternately supply to 1 each of "a pluralityqof measuring chambers a predetermined amount of-liquid, any excess supplied liquid being diverted in a controlled manner. 7

Another object is to control the various parts of the apparatus and the flow of liquid in a manner to meet all of the requirements for successful commercial use. These and other objects are accomplished byfm-eans of, the arrangement disclosed on the accompanying sheet of drawings, m V which Figure 1 is,. a vertical longitudinal sectional view, parts being in elevation, of liquid dispensing apparatus embodying my inven- =tion; I ,t

Figure 2 is a detail front elevation of the four-way control valve by means of which flow of liquid between the source of supply, measuring chambers and dispensing. line is controlled s Figure 3 is a detail vertical sectional viewof the valve taken in the plane of line 33 of Figure 2;

Figure 4 is a detail front elevation of rotary valvemember; and, I I

Figure 5 is a fragmentary detail sectional view of the air connection between the measuring chambers and showing one ofthe float valves. 7 I

The various novel features of the invention will be apparent from the following descripthe 1731923 "serial m. 88,770.

tion and drawings, and will be particularly pointed out in the a pended claims.

Referring to'the gures of the drawings in which the apparatus is shown somewhat diagrammatically, it will be noted that the-invention is illustrated inconnection with continuous flow liquid dispensing apparatus ineluding two preferably transparent measuring chambers 10 and ll'into which liquid is forced from any suitable sou-rcerepresented by the liquidstorage tank 12, the liquid bein drawn therefrom, in this instance, throug a pipe 13 by a pump 14 and then forced through a p1 e 15 alternately through pas sages 16 and l7 in valve 18 and respectively through pipes 19 and 20 into said measuring chambers 10 and 11 respectively. After the liquid is measured within the measuring chambers 10-and 11, it is discharged alternately from said chambersthrough the same I pipes 19 and 20 and through passageways in valve 18 and out through the dispensing or, service pipe 21 to which ahose or the like may be connected. L

'More specifically considered, the pump 14 in this instanceis a double acting reciprocatory type of pump having a piston 22 which is reciprocated wlthin the cylinder 23 of the pump. On the up stroke of the piston 22 liquid is drawn through the pipev13 and past V valve 24 for filling the pump cylinder 23 below the piston 22. At the same time liquid which previously has been drawn past valve 25 up through passageway 26 and into the upper part of cylinder 23, is forced upwardly and outwardly by; the piston 22 from said cylinder 23 past the valve 27 and up- .wardly through the pipe 15. on its way through the oscillatory or reversing control valve 18 and into the measuring chambers 10 and 11. On the down stroke of the piston-22 liquid is forced out of the cylinder 23, upwardly through pump passageway 28 through pipe 15 toward the measuring chama bers 10 and 11. It is seen, therefore, that this double acting pump furnishes a continuous flow of liquid to the measuring chambers 10 and 11. Also the flow-of liquid through the dispensing pipe 21 may be continuous, for as one measuring chamber, for: example cham-,

way 1 Y which has been measured in measuring chamber 10 is passed downwardly and outwardly through pipe 19, valve port 31, valve arcuate passageway 16, valve i port 32, and out through dispensin pi 21. As li uid rises in the measuring am r 11,- air is orced by saidf'rising liquidvfrom the upper part of said measuring chamber through an air pipe 33 into the upper part of measuring chamber 10. Air will continue to be transferred froin chamber 11 to chamber until the liquid rises up into engagement with and presses a float valve 34 into closed position against'its seat 35. lVhen the float valve 34 closes, the

supplypfliquid to the measuring chamber" ceases, 1n spite of the fact that the capacity of the pump 14 is in excess of the capacity of either-of the measuring chambers 10 and 11.

As a result thereof, the pump continuing its same pumping stroke, liquid pressure is built up 1n the supply pipe 15. When this liquid pressure rises above a certain predetermined value, a relief valve is ppened against the pressure of its backin sprm .61, whereby theexcess pumped ,liqui will ow from supply pi 15, through excess flow pipe 62, past va vs 60, through excess flow pipe 63 and into an excess flow receptacle 64. Mounted within said receptacle 64 is a float valve which controlsthe exit of liquid therefrom. When thefli uid is below a certain predetermined level, t e float valve seals the exit opening 66, but when the liquid is above said level, the float valve 65rises permitting liquid to flow from the excess flow receptacle 64, from which said liquid is drawn b the pump 14, through-the return pipe 67, ack to ipe 13 and then through the pump and up t rough supply pipe 15. vIn the mean time, however,

the reversin valve 18 has been shifted, through mec anism to be described herein after, -permitting the passage of the measured liquid from the measuring chamber 11 and for permitting the flow of liquid into the measuring chamber 10. By means of this bypass around the supply or excess connection, the use of ove ow pipes for the measuring chambers 10 and 11 is obviated.

including the excess flow receptacle 64.

In connection with the supply of liquid to i the measuring chambers 10 and 11, the capacity of the pump 14 is sufiiciently large, and said pump is so timed with respect to uring 'A pin 45 projects from.

the reversing control valve 18 that the measchambers are filled and an excess amount of liquid pum d before the reversing valve is reversed or permitting reverse assage of the liquid to and from said. cham- With respect to the time relationship between the pump 14 and the reversing valve 18, it will be noted that the pump piston 22 has a rod 40terminating in a rack 41 meshing with and actuated by a gear 42 mounted 1 upon a shaft 43 having a crank 44 which may be operated either by hand or by a motor.

the rack 41 and at the end of the piston strokes is adapted alternately to engage arms 46 and 47 which are adjustably fixed to a rod 48 connected'at its upper end to auarm 49 on shaft 50 of the valve 18. Accordingly, it will be seen that -when the piston '22. has about reached the lower end of its downward stroke, the pin 45 will be forced into engagement with the arm 46 for reversing the valve 18 from. its position shown in Figure 1 into a position orresponding to that shown in Figure 4. finder such circumstances it wil'lbe seen that the measured liquid in chamber 11 will. then be discharged through pipe 20, port 30, valve passageway 17, port 32 and dispensing line 21. At the same time, liquid will be supplied through the supply pipe 15, port 29, valve passageway 16, port 31 and p pe 19 to the measuring-chamber 10. By virtue of the fact "that the pump is of such capacity as to fill either of the measuring chambers 10 or 11, and supply an excess amount in addition upon a single stroke, the control reversing valve 18 may be given a reversing movement timed to the operation of thepump,

such actuation of the valve being entirely automatic.

Indicating mechanism 51 may be operatively,connected to the reversing valve in any desirable manner to indicate the number of gallons measured. Calibratingplugs 52 are shown for calibrating the measuring chambers 10 and 11. Suitable vent control connections 53 are provided zit the upper end of each of the measuringcha-mbers 10 and 11 to connect the interior of said chambers to the atmosphere when it is desired to empty said measuring chambers when the other of said chambers is not being filled.

It is our intention to cover all modifications of the invention falling within the 1:35

It will be understood that the operation is ,Splnt and Scope the followmg clalms' the same when the measuring chamber 10 has been filled with liquid, the excess amount of' pumped liquid passing around the connection 3 We claim: 1. In liquid dispensing apparatus, the combination of an elevated measuring chamber, .a source of liquid supply, a supply pipe as-.

sociated with said chamber and source of supply and through which liquid is supplied vto said measuring chamber, discharge means,

discharge means whereby said chamber may be filled and emptied, an excess flow rece tacle connected to' said supply pipe below said.

measuring chamber and said valve whereby when said measu ing chamber has received a predetermined amount of liquid and when said valve is connecting said chamber and said discharge means, any excess amount of liquid will be diverted to said excess flow receptacle, and means in said receptacle fdf closing communication between saidreceptacle and a conne'ction'to said sourceoj supply whereby liquid will not be bypassed pfi'pund said chamber before said chamber is 2. In liquid dispensing apparatus, the combination of a measuring chamber, ,asupply pipe through which liquid is supplied to said 7 measuring chamber,.discharge means, a valve for alternately connecting said measuring chamber to said supply pipe and to said dis-- filled andemptied, a pump for forcing-the charge means whereby said chamber may be filled and emptied, an excess flow receptacle connected to'said supply pipe whereby when said measuring chamber has received a pre determined amountof liquid, any excess amount of liquid will be divertedto-said excess'fiow receptacle, and means for controlling discharge of liquid from said excessflow receptacle. 5 g

3. In liquid dispensing apparatus, the combination of a measurin "chamber, a supply pipe through which liquid is supplied to' said measuring chamber, discharge means, a valve for alternately connecting said measuring chamber to said supply pipe and to said dis charge means whereby said chamber may be liquid through said pipe, a by-pass connection around said supply pipe and'connected thereto on opposite sides of said pump where by after said measuring chamber has received a certain quantity of liquid excess pumped liquid will be forced fronrsaid supply pipe on one side of said pump through said by{ pass connection and returned to said supply pipe on the other ,side of said pump, and

means responsiveto liquid pressure in said bv-pass connection for controlling the flow of liquid therethrough. v r

4. In liquid dispensing apparatus, the combination of ameasuring chamber, a supply pipe through which liquid is supplied to saidmeasuring chamber, discharge mean s,a valve for alternately connecting sa1d measuring chamber to said supply pipe and to said discharge means whereby said chamber may be filled and emptied, a pump, for forcing the liquid through said pipe, a by-pass connection around said supply pipe and'connectedthereto on opposite sides of said pump whereby after said measuring chamber has received 7 a certain quantity of liquid,'excess.pu1nped 7 liquid will be forced from said supply pipe on one side of said pump through saidbynately to said chambers, said chambers,.and means for closingsaid pass connection and returned to said supplfiypipe on theother side of saidpumpkmea s responsive to liquid pressure in'said connection for controlling the flow of therethrough, and a valve between said urin chamber and said'pump for controlling the ow of liquid to saidmeasuring chamber.

5. In liquid dispensing apparatus, the combination of .a plurality of measuring chambers, means for suppl in liquid thereto, a valve for controlling t e ifow of liquid altera connection between y-pass liquid connection when a predetermined amount of liquid hasbeen supplied to said chambers,

and a valve controlled excess flow pipe connected to said supply pipefiwhereby 'when either of said measuring chambers has re-' ceived a predetermined amount of liquid, any

measexcess amount of liquid will be diverted throu hsaid excess flow pipe.

. 6. liquid dispensing apparatus, the combination of a plurality of measuring chambers, means forsupplying liquid thereto, a valve for controlling the su and the discharge of liqui from said chame ply of liquid to bers, a connection between said chambers, and means for closing sa1d connection when a predetermined amount of liquid has been suptacle, and a valve controlled-excess flow pipe between said liquid supply means and said excess flow receptacle whereby when either of said measuring chambers has received a preany excess determined amount of liquid, 4 amount of liquid will bediverted through said excess flow pipe and excess 'flow receptacle. d y Y 7. In liquid dispensing apparatus, the

combination of a plurality of measuring chambers, means for supplying liquid thereto, a valve for controlling the supply of liquid to andthe dischargeof liquid from said chambers, a connection between said chambers and means for closing said connection when 0 apredetermined amount of liquid has been supplied to said chambers, an-excess flow re cepta'cle, a valve controlled excess flow pipe between said liquid supply means and said exsaid measuring chambers has received a predetermined amount of liquid, any excess amount of liquid will be diverted through said excess flow pipe and excess flow recepexcess flow receptacle and said supply pipe whereby liquid may returned to said supplypipe from said excess flow receptacle.

8. In liquid dispensing apparatus, the combination bers, means for supplying liquid thereto, a valve for controlling the supply of liquid to and the discharge of liquid from said chambers, a connection between said chambers, and

means for closing said connection when a pre- 1 plied to said chambers, an excess flow recep- 95 I cess flow receptacle whereby when either of tacle,:md another connection between said of a plurality of measuring chamdeterminedamountof liquid has been supplied to said ehamberajan exeess iiqw'reeepvtacle, a valve eont He'd excess flow pi be-' tween said liquid supply means; an said V excess flow receptacle whereby when either of said measuring chambers has received a predetermined amount'fof liquid as excess amount of liquid will be diverted through said excess flow. pipe and excess flow receptacle, an another connection between sa1d exee$ fi w receptacle and. said supply. pipe whereby liquid may be returned to said supply pipe from-saidexeess flow receptac'le and norm'dlly closed means en said excess flow receptacle preventing liquid return to said supply pipe until only when a certain amount of liquidhas been supplied to said receptacle. r Signed at Rochester, Pennsylvania, this 0 11th day of February, 1926.

' WALTER H. PARKER.

FREDERICK W. DEIJANOXL 

